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scientiffic
scientiff..

OpenGL + selectFolder()

in Contributed Library Questions  •  1 year ago  
I am running into problems using both OpenGL and selectFolder() in my sketch.  I am using the PeasyCam, controlP5, and OpenGL libraries, so as a sanity check, I used the following sample code:


I then added an extra line to select a folder and my program just hangs up without doing anything.  BUT, if I change OpenGL to P3D, it works fine.  Anyone know how to solve this problem?  I need OpenGL for my application so...

Copy code
  2. /**
  3.  * ControlP5 with PeasyCam support. tested with peasy 0.8.2
  4.  *
  5.  * by jeffg 2009
  6.  * http://processing.org/discourse/yabb2/YaBB.pl?num=1234988194/30#30
  7.  */
  8.  
  9. import peasy.*;
  10. import controlP5.*;
  11. import processing.opengl.*;

  13. PeasyCam cam;
  14. ControlP5 controlP5;
  15. PMatrix3D currCameraMatrix;
  16. PGraphics3D g3; 

  18. int buttonValue = 1;

  20. int myColor = color(255,0,0);

  22. void setup() {
  23.   size(400,400,OPENGL);
  24.   String directory = selectInput();
  25.   g3 = (PGraphics3D)g;
  26.   cam = new PeasyCam(this, 100);
  27.   controlP5 = new ControlP5(this);
  28.   controlP5.addButton("button",10,100,60,80,20).setId(1);
  29.   controlP5.addButton("buttonValue",4,100,90,80,20).setId(2);
  30.   controlP5.setAutoDraw(false);
  31.   
  32. }
  33. void draw() {
  34.   
  35.   background(0);
  36.   hint(ENABLE_DEPTH_TEST);
  37.   fill(myColor);
  38.   box(30);
  39.   pushMatrix();
  40.   translate(0,0,20);
  41.   fill(0,0,255);
  42.   box(5);
  43.   popMatrix();
  44.   // makes the gui stay on top of elements
  45.   // drawn before.
  46.   hint(DISABLE_DEPTH_TEST);
  47.   gui();
  48.   
  49. }

  51. void gui() {
  52.    currCameraMatrix = new PMatrix3D(g3.camera);
  53.    camera();
  54.    controlP5.draw();
  55.    g3.camera = currCameraMatrix;
  56. }

  58. void controlEvent(ControlEvent theEvent) {
  59.   println(theEvent.controller().id());
  60. }

  62. void button(float theValue) {
  63.   myColor = color(random(255),random(255),random(255));
  64.   println("a button event. "+theValue);
  65. }
  66.  

Replies(5)

rbrauer
rbrauer

Re: OpenGL + selectFolder()

1 year ago
You can call selectInput() and call a method to do something with the selected input from inside a separate thread so it doesn't interrupt the main program. I moved selectInput(() so it is called by clicking the top button.
Copy code
  1. void button(float theValue) {
  2.  
  3.   new Thread(
  4.     new Runnable() {
  5.       public void run() {
  6.         doSomethingWithSelected(selectInput());
  7.       }
  8.     }
  9.   ).start();
  10.  
  11.   myColor = color(random(255),random(255),random(255));
  12.   println("a button event. "+theValue);
  13. }
  14. void doSomethingWithSelected(String sel) {
  15.   println(sel);
  16. }
I'm not sure if that is the proper way to do it, but it works. By the way, doesn't Processing 2.0 have an easier, wrapped up way to create a thread?
sam.kronick
sam.kroni..

Re: Re: OpenGL + selectFolder()

1 year ago
This is the only thing that I could get to work using Processing 1.5.1 on OSX Snow Leopard with GLGraphics and ControlP5. Thanks for the tip!
scientiffic
scientiff..

Re: OpenGL + selectFolder()

1 year ago
Thanks for your response.  I tried out your code, and it didn't seem to work.  The program still hangs up without displaying anything.  

This is my code:
Copy code

  3. /**
  4.  * ControlP5 with PeasyCam support. tested with peasy 0.8.2
  5.  *
  6.  * by jeffg 2009
  7.  * http://processing.org/discourse/yabb2/YaBB.pl?num=1234988194/30#30
  8.  */
  9.  
  10. import peasy.*;
  11. import controlP5.*;
  12. import processing.opengl.*;

  14. PeasyCam cam;
  15. ControlP5 controlP5;
  16. PMatrix3D currCameraMatrix;
  17. PGraphics3D g3; 

  19. int buttonValue = 1;

  21. int myColor = color(255,0,0);

  23. void setup() {
  24.   size(400,400,OPENGL);
  25.   String directory = selectInput();
  26.   g3 = (PGraphics3D)g;
  27.   cam = new PeasyCam(this, 100);
  28.   controlP5 = new ControlP5(this);
  29.   controlP5.addButton("button",10,100,60,80,20).setId(1);
  30.   controlP5.addButton("buttonValue",4,100,90,80,20).setId(2);
  31.   controlP5.setAutoDraw(false);
  32.   
  33. }
  34. void draw() {
  35.   
  36.   background(0);
  37.   hint(ENABLE_DEPTH_TEST);
  38.   fill(myColor);
  39.   box(30);
  40.   pushMatrix();
  41.   translate(0,0,20);
  42.   fill(0,0,255);
  43.   box(5);
  44.   popMatrix();
  45.   // makes the gui stay on top of elements
  46.   // drawn before.
  47.   hint(DISABLE_DEPTH_TEST);
  48.   gui();
  49.   
  50. }

  52. void gui() {
  53.    currCameraMatrix = new PMatrix3D(g3.camera);
  54.    camera();
  55.    controlP5.draw();
  56.    g3.camera = currCameraMatrix;
  57. }

  59. void controlEvent(ControlEvent theEvent) {
  60.   println(theEvent.controller().id());
  61. }

  63. void button(float theValue) {
  64.   myColor = color(random(255),random(255),random(255));
  65.   println("a button event. "+theValue);
  66.   
  67.   myColor = color(random(255),random(255),random(255));
  68.   println("a button event. "+theValue);
  69.   
  70.   new Thread(
  71.     new Runnable() {
  72.       public void run() {
  73.         doSomethingWithSelected(selectInput());
  74.       }
  75.     }
  76.   ).start();
  77. }

  79. void doSomethingWithSelected(String sel) {
  80.   println(sel);
  81. }
rbrauer
rbrauer

Re: OpenGL + selectFolder()

1 year ago
Oh, right. I should have mentioned before, you have to remove the original call to selectInput(). Remove line 25 and it should work.
scientiffic
scientiff..

Re: OpenGL + selectFolder()

1 year ago
cool, thanks!
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